Issue while adding new header to the existing document, if convert doc to docx using LibrOffice

[swagat123]

Hi

Adding new header worked fine for docx . We recently got "doc" file and i used the LibreOffice to convert doc to docx. I tried to add a header in this document , it throws error message
document = Document("myfile.docx")
document.add_heading('Heading, level 2', level=2)
document.save("myfile.docx")
KeyError: "no style with name 'Heading 2'"

Is this library not supporting to add the heading if the doc is converted using LibrOffcie?

I appreciate your suggetsions.

[scanny]

Make sure you understand this page in the documentation and the page that follows it:
https://python-docx.readthedocs.io/en/latest/user/styles-understanding.html

The "doc" file doesn't have a "Heading 2" style and you need to add that if you want to use it.